EP1450425A4 - Composite oxide for solid oxide fuel cell and method for preparation thereof - Google Patents

Composite oxide for solid oxide fuel cell and method for preparation thereof

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Publication number
EP1450425A4
EP1450425A4 EP02781798A EP02781798A EP1450425A4 EP 1450425 A4 EP1450425 A4 EP 1450425A4 EP 02781798 A EP02781798 A EP 02781798A EP 02781798 A EP02781798 A EP 02781798A EP 1450425 A4 EP1450425 A4 EP 1450425A4
Authority
EP
European Patent Office
Prior art keywords
composite oxide
fuel cell
preparation
low temperature
relatively low
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02781798A
Other languages
German (de)
French (fr)
Other versions
EP1450425A1 (en
Inventor
Fumio Munakata
Kenji Furuya
Masaharu Hatano
Yoshinori Fujie
Manabu Suhara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seimi Chemical Co Ltd
Original Assignee
Seimi Chemical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seimi Chemical Co Ltd filed Critical Seimi Chemical Co Ltd
Publication of EP1450425A1 publication Critical patent/EP1450425A1/en
Publication of EP1450425A4 publication Critical patent/EP1450425A4/en
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
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    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/10—Fuel cells with solid electrolytes
    • H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
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    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C04B35/62645—Thermal treatment of powders or mixtures thereof other than sintering
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    • H01M4/88—Processes of manufacture
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    • H01M4/90—Selection of catalytic material
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    • H01M4/9033—Complex oxides, optionally doped, of the type M1MeO3, M1 being an alkaline earth metal or a rare earth, Me being a metal, e.g. perovskites
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  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

A composite oxide for a solid oxide fuel cell which comprises a rare earth element, has a perovskite type crystal structure, contains a phase having a structure different from a perovskite type structure in an average area percentage of 0.3 % or less, has constituent elements being homogeneously dispersed therein, and has a melting point of 1470 °C or higher; and a method for preparing the composite oxide which comprises reacting one or more metal carbonates, one or more metal oxides and/or one or more metal hydroxides with citric acid. The composite oxide can be fired at a relatively low temperature and is reduced in the content of an impurity phase having a structure different from the primary structure, and thus can be used for manufacturing a fuel cell having high performance capabilities and capable of being operated at a relatively low temperature.
EP02781798A 2001-11-15 2002-11-15 Composite oxide for solid oxide fuel cell and method for preparation thereof Withdrawn EP1450425A4 (en)

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JP2001350372A JP4393027B2 (en) 2001-11-15 2001-11-15 Composite oxide for solid oxide fuel cell and method for producing the same
JP2001350372 2001-11-15
PCT/JP2002/011949 WO2003043111A1 (en) 2001-11-15 2002-11-15 Composite oxide for solid oxide fuel cell and method for preparation thereof

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EP1450425A1 EP1450425A1 (en) 2004-08-25
EP1450425A4 true EP1450425A4 (en) 2009-01-28

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WO (1) WO2003043111A1 (en)

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JP2003151579A (en) 2003-05-23
WO2003043111A1 (en) 2003-05-22
US20050031518A1 (en) 2005-02-10
KR20040066118A (en) 2004-07-23
CN1586020A (en) 2005-02-23
CA2467120A1 (en) 2003-05-22
JP4393027B2 (en) 2010-01-06
CN1285138C (en) 2006-11-15
US7368095B2 (en) 2008-05-06
EP1450425A1 (en) 2004-08-25

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